What is Cloisonné as opposed to 'Wireless Cloisonné'?

In the cloisonné technique, small cells are made of silver or copper wire. These cells are filled with various colours of enamel, after which the work is fired. The wires form the boundaries between the colours.

In 'wireless cloisonné' the cells (cloisons) have been made and filled with enamels, after which the work has been fired. But afterwards, the wires have been etched away, leaving the enamels lying next to one another without the 'normal' boundaries. Only very few people have mastered this technique. That is why artifacts made in this way, usually fetch very high prices. I saw a broadcast of the Antiques Road Show in which a turquooise vase with flowers and a crow, made in this technique, was estimated to have a value of £15,000 - £18,000.